The Hobbit (v1.0): Memory map

Page	Byte	Address	Description
96	0	6000	Dictionary letter index
96	64	6040	Main dictionary (the words the player can type)
103	176	67B0	Second dictionary (message words)
107	238	6BEE	Unused
108	0	6C00	Game entry point (RANDOMIZE USR 27648)
108	39	6C27	Start or restart a game
109	10	6D0A	Main command loop
109	195	6DC3	Window separator pattern
109	205	6DCD	Read a line of input from the keyboard
110	70	6E46	Cursor-key shortcuts
110	113	6E71	Repeat the last command
110	130	6E82	Delete the whole input line
110	142	6E8E	Turn the next word of the input into a token
111	39	6F27	Recognise punctuation
111	62	6F3E	Start a dictionary search for the typed word
111	177	6FB1	Compare the typed word with a dictionary word
111	202	6FCA	Clear the screen
111	233	6FE9	Initial prompt and command
111	240	6FF0	Input buffer
112	113	7071	Tokeniser work areas
112	147	7093	Token buffer
112	211	70D3	Registers saved by the message printer
112	217	70D9	Clear a block of memory
112	223	70DF	Get the address of an action table entry
112	234	70EA	Collect the flag nibbles of an action table entry
113	17	7111	Report the action (if not inside a quotation)
113	34	7122	Report the action ("you attack thorin with the sword.")
113	204	71CC	Get the address of a room's word list
113	217	71D9	Get the address of an object's word list
113	234	71EA	Match a command against an action table entry
114	37	7225	Compare two word references
114	64	7240	Wait for a key, typing WAIT if the player is idle
114	130	7282	Compare HL with DE
114	136	7288	The WAIT command
114	140	728C	Message interpreter control-code jump table
114	186	72BA	Print a character from a message
114	197	72C5	Print "I cannot do that."
114	202	72CA	Print a message, suppressing actions inside a quotation
114	212	72D4	Print a message (message bytecode interpreter)
115	55	7337	Message code $14: end with a new line
115	59	733B	Message code $15: end with a full stop
115	63	733F	Print the last word of a message and finish
115	94	735E	Message code $00: print an object passed on the stack
115	109	736D	Message code $01: print a word passed on the stack
115	117	7375	Message code $02: relative jump
115	132	7384	Message code $03: print the instrument's noun
115	139	738B	Message code $04: print a word with an article
115	154	739A	Message code $06: print the actor's name
115	166	73A6	Message code $07: print the target
115	180	73B4	Message codes $08 and $09
115	190	73BE	Print the instrument
115	215	73D7	Message code $0B: call a sub-message
115	240	73F0	Message code $0C: HIS or YOUR (actor)
115	254	73FE	Message code $0E: HIS or YOUR (target)
116	3	7403	Message code $10: "you are" or "thorin is"
116	28	741C	Message code $11: target's name and IS/ARE
116	36	7424	Message code $13: pushed object's name and IS/ARE
116	43	742B	Print an object's name from its word list
116	54	7436	Print the article for a word
116	111	746F	Print a word, with an article if required
116	127	747F	Print the name of object A
116	138	748A	Print an abbreviated word
116	157	749D	Word buffer
116	177	74B1	Print a word from a list
116	184	74B8	Print a dictionary word
117	107	756B	Is output enabled?
117	120	7578	Print a newline
117	128	7580	Print a character
117	168	75A8	Unused
117	172	75AC	Print a character in the input window (entry from 7580)
117	173	75AD	Print a character in the lower (input) window
118	0	7600	Scroll the input window up
118	61	763D	Scroll the input window down
118	109	766D	Print a character using the ROM font
118	142	768E	Unused
118	148	7694	Put a character on the screen
119	84	7754	Move back one character position
119	94	775E	Scroll the story window up
119	188	77BC	Draw a character glyph
120	21	7815	Font
123	21	7B15	Copy a line of text to the ZX Printer
123	107	7B6B	Short delay
123	116	7B74	Keyboard scan state
123	134	7B86	Read a key
123	238	7BEE	Keyboard table
124	22	7C16	Keyboard table (SYMBOL SHIFT)
124	62	7C3E	Parser work area
124	79	7C4F	Parse the command
124	156	7C9C	Parser jump table
124	182	7CB6	Is the parser inside a quotation (set Z)?
124	187	7CBB	Is the parser inside a quotation?
124	192	7CC0	Parser: end of line (and THEN / full stop)
125	182	7DB6	Parser: a direction
125	213	7DD5	Parser: AND
125	249	7DF9	Parser: GO or RUN
125	251	7DFB	Parser: a verb
126	90	7E5A	Parser: an article
126	95	7E5F	Parser: IN or INTO
126	108	7E6C	Parser: a noun phrase
126	211	7ED3	Parser: store an adjective
126	230	7EE6	Parser: store a preposition
126	245	7EF5	Parser: store a noun phrase in the frame
127	34	7F22	Parser: move on to the next frame
127	41	7F29	Parser: clear the ALL state
127	46	7F2E	Parser: clear the current frame
127	61	7F3D	Parser: fetch the next token
127	86	7F56	Parser: step back to the previous frame
127	92	7F5C	Parser: step on to the next frame
127	105	7F69	Find the next frame (24 bytes lower)
127	111	7F6F	Find the previous frame (24 bytes higher)
127	129	7F81	Parser: give a frame the previous frame's verb
127	197	7FC5	Copy part of one frame to another
127	222	7FDE	Parser: store the verb
127	238	7FEE	Parser: syntax error
127	249	7FF9	Print "what?"
128	7	8007	Unused
128	9	8009	Parser: special words
128	41	8029	Special words
128	93	805D	PRINT and NOPRINT
128	107	806B	Special word finished: carry on parsing
128	114	8072	EXCEPT
128	138	808A	ALL
128	154	809A	IT
128	175	80AF	Store the noun phrase in the frame (jump)
128	181	80B5	Opening quotation mark
128	205	80CD	Quotation mark
129	73	8149	QUIT
129	88	8158	HELP
129	133	8185	Help messages
129	167	81A7	SCORE
129	173	81AD	Print the score
129	230	81E6	Divide by repeated subtraction
129	242	81F2	PAUSE
130	9	8209	LOAD
130	80	8250	Load a block, or restart on a tape error
130	107	826B	Copy three bytes
130	113	8271	Wait for a key press and release
130	132	8284	SAVE
131	18	8312	Verify a block
131	46	832E	Command execution work area
131	81	8351	Execute a command and run the turn
131	154	839A	Clear the command execution work area
131	167	83A7	Find the action and objects for a command
132	5	8405	Search for a target and an instrument
132	100	8464	ALL: find the next object
132	146	8492	Start the search for targets
132	171	84AB	Start the search for instruments
132	189	84BD	Choose the object table to search
132	201	84C9	Does the action need an instrument?
132	222	84DE	Try the action (dry run)
132	230	84E6	Would this action work? (for a character)
133	84	8554	Copy an object's or a room's words
133	105	8569	Decode the flags of the action
133	143	858F	Find the action for a command
134	20	8614	Assign the noun phrases to target and instrument
134	157	869D	Pick up a preposition from the frame
134	186	86BA	Call the routine at IY
134	188	86BC	Find the next candidate target
134	237	86ED	Find the next candidate target for which the action works
135	8	8708	Find the next candidate instrument
135	69	8745	Find the next candidate instrument for which the action works
135	92	875C	Prepare to reply to the player
135	101	8765	Leave the command unfinished
135	116	8774	Ask "which ...?"
135	129	8781	Print a reply and give up
135	137	8789	Decide about the instrument
135	173	87AD	Report why the objects could not be decided
136	62	883E	Report a missing or unsuitable instrument
136	101	8865	Push the words of the action for a question (instrument)
136	105	8869	Push the words of the action for a question
136	149	8895	"I do not know the verb ..."
136	167	88A7	Address the orders to a character
136	236	88EC	Find an order for the current actor
136	253	88FD	Does the actor have an order waiting?
137	7	8907	Obey an order
137	77	894D	Cancel a character's orders
137	100	8964	Unused
137	101	8965	Draw the picture of a room, if it has one
137	133	8985	Draw a picture
138	77	8A4D	Unused
138	79	8A4F	Flood fill
138	204	8ACC	Test a pixel
138	211	8AD3	Move an attribute address up a row
138	228	8AE4	Move an attribute address down a row
138	245	8AF5	Move an attribute address left
138	255	8AFF	Move an attribute address right
139	9	8B09	Move the drawing position up
139	24	8B18	Move the drawing position down
139	31	8B1F	Move the drawing position right
139	38	8B26	Move the drawing position left
139	47	8B2F	Draw a line
139	147	8B93	Plot a pixel
139	188	8BBC	Get the screen address of a pixel
139	233	8BE9	Start a picture: clear the picture area
140	44	8C2C	Drawing colour
140	45	8C2D	LOOK
140	58	8C3A	Is the actor carrying the target?
140	69	8C45	DROP
140	117	8C75	TAKE OUT OF
140	134	8C86	Can the actor lift the target?
140	200	8CC8	TAKE and CARRY
140	234	8CEA	Points for visiting rooms
141	21	8D15	Move variables
141	25	8D19	Move an actor (GO north, EAST, etc.)
142	52	8E34	Is an object shut inside something?
142	78	8E4E	LOOK THROUGH (a door or window)
142	90	8E5A	LOOK ACROSS (a river)
142	157	8E9D	GO THROUGH (a door, window or river)
142	160	8EA0	Go through an exit
142	211	8ED3	FILL WITH
143	23	8F17	RUN
143	55	8F37	ENTER and GO INTO
143	64	8F40	FOLLOW
143	95	8F5F	THROW AT
143	158	8F9E	TALK TO and SAY TO
143	207	8FCF	DIG (the sand)
143	224	8FE0	SHOOT
144	60	903C	The player is dead
144	85	9055	INVENTORY
144	120	9078	OPEN
144	162	90A2	CLOSE
144	180	90B4	Check that a target may be attacked (sides)
144	219	90DB	Attack (HIT, KILL, ATTACK, STRIKE, SMASH ...)
145	125	917D	Randomise a fight value
145	144	9190	Wound messages
145	176	91B0	Is the target an ordinary object?
145	185	91B9	PUT IN, PUT ON and DROP IN
146	6	9206	EAT and DRINK
146	82	9252	"The X is broken"
146	87	9257	STRIKE (break something)
147	8	9308	GIVE TO
147	68	9344	EXAMINE
147	110	936E	EMPTY
147	146	9392	PUT or DROP something in the river
147	205	93CD	LOCK
147	237	93ED	UNLOCK
148	4	9404	THROW ... ACROSS / THROUGH
148	54	9436	Could the action apply to this target?
148	111	946F	Carry out the action
149	63	953F	Let a character react to what was done to it
149	77	954D	Is it too dark for Bilbo to see?
149	137	9589	Describe the room through a door
149	142	958E	Describe a room
149	185	95B9	Describe a room (continued)
149	228	95E4	Print a room's name or description
149	248	95F8	Wait for a key after a picture
150	6	9606	Describe a room briefly
150	17	9611	End of turn: run the timers
150	134	9686	Is the object within the player's reach?
150	218	96DA	Kill the target
150	221	96DD	Kill a character
151	11	970B	Choose the random features of a new game
151	82	9752	Print a message and end the sentence
151	93	975D	Is the action really happening?
151	105	9769	Unused
151	108	976C	Let the other characters act
152	115	9873	Advance a character's program pointer
152	131	9883	Character instruction: do an action
152	207	98CF	Character instruction: action without objects
153	33	9921	A character tries an action
153	180	99B4	Choose a behaviour at random
153	224	99E0	Find a character's table entry
153	251	99FB	Change a character's behaviour
154	40	9A28	Report that a character has arrived
154	93	9A5D	Prepare for the characters' turn
154	113	9A71	A character tries to get out of something
154	159	9A9F	Is the action sensible?
154	199	9AC7	Call the routine at HL (if HL is not 0)
154	219	9ADB	Jump to HL
154	220	9ADC	Find an object's handler for an action
154	238	9AEE	Get the next entry of a 3-byte table
155	4	9B04	Get the next object
155	12	9B0C	Get the address of a room record
155	37	9B25	Get the address of an object record
155	55	9B37	Bilbo-moved flag
155	56	9B38	Move an object and everything it holds
155	108	9B6C	Move the contents of an object
155	150	9B96	How much room is left in a room?
155	205	9BCD	Is the actor holding the target?
155	223	9BDF	Is object A inside the holder at (HL)?
155	244	9BF4	Random number from 0 to A
155	253	9BFD	Random number in a range
156	61	9C3D	Total size of an object's contents
156	66	9C42	Total weight of an object's contents
156	85	9C55	Add up the contents of an object
156	140	9C8C	Get the actor's room record
156	153	9C99	Check for a dry run
156	165	9CA5	Drop everything the target holds
156	168	9CA8	Drop everything an object holds
156	236	9CEC	Count the visible things an object holds
157	18	9D12	Search a table of 3-byte entries
157	46	9D2E	Find the next object that fits some words
157	119	9D77	Can the object at IY be seen from IX?
157	134	9D86	Is the object near the actor?
157	146	9D92	Are two objects in the same place?
157	200	9DC8	Find the outermost holder
157	222	9DDE	Get the actor's room's exits
157	233	9DE9	Find the next room that fits some words
158	16	9E10	Print an object's name
158	31	9E1F	Print a noun with its adjectives
158	81	9E51	Find a usable exit in a direction
158	110	9E6E	Find the exit through the target
158	113	9E71	Find the exit through a given door
158	118	9E76	Find the exit that leads to a room
158	147	9E93	Run a handler with target and instrument swapped
158	191	9EBF	Report failure
158	203	9ECB	Get an object's room
158	221	9EDD	List what can be seen in the room
158	248	9EF8	List the objects held by A in room B
159	16	9F10	List objects, with their contents
159	137	9F89	Print the heading for a list of contents
159	222	9FDE	Get the start of a room's exits
159	234	9FEA	Get the word for a direction
159	248	9FF8	Describe the doors of a room
160	84	A054	Find the next visible exit
160	104	A068	List the visible exits
160	148	A094	"The X is Y" (instrument)
160	156	A09C	"The X is Y"
160	188	A0BC	Mark an object as dead or broken
160	222	A0DE	Look up the holder of an object (unused)
160	248	A0F8	Is the object alive?
161	0	A100	Should the instrument's handlers be used?
161	19	A113	A character speaks
161	41	A129	Is the target locked or open?
161	59	A13B	Action and word tables
161	116	A174	Handler for the water: DRINK
161	120	A178	TIE TO
161	228	A1E4	UNTIE
161	253	A1FD	Handler for the fast river: SWIM
162	50	A232	BURN
162	64	A240	Handler for the fast black river: SWIM
162	88	A258	Handler for the black water: DRINK
162	96	A260	Handler for the side door: UNLOCK
162	100	A264	Handler for the red door: LOCK and UNLOCK
162	104	A268	Handler for the heavy rock door: LOCK and UNLOCK
162	106	A26A	Does this key fit?
162	142	A28E	Handler for the side door: OPEN
162	152	A298	Handler for the crack: OPEN
162	167	A2A7	Handler for the spider web: it has been broken
162	192	A2C0	Handler for the ring: WEAR
162	236	A2EC	Handler for the ring: TAKE OFF
163	22	A316	CAPTURE
163	106	A36A	A dead goblin comes back
163	195	A3C3	Goblin reincarnation table
163	231	A3E7	Handler for the goblins' door: OPEN
164	0	A400	Timer 3 expires: the goblins' door closes
164	6	A406	Character routine: react to being given something
164	28	A41C	Character routine: "what's this?"
164	37	A425	Character routine: small talk
164	67	A443	Character routine: "this was thrains key"
164	76	A44C	Character routine: greet Bilbo
164	93	A45D	Handler for the magic door: OPEN
164	104	A468	CLIMB OUT OF
164	134	A486	CLIMB INTO (the barrel, the chest or the boat)
164	195	A4C3	Is the object open?
164	202	A4CA	Character routine: the warg
164	219	A4DB	Handler for the trap door: the barrel escape
164	244	A4F4	Timer 0: the barrel floats down the river
165	57	A539	Character routine: "where's the thief?"
165	80	A550	Character routine: Thorin
165	119	A577	Handler for the trap door: OPEN and CLOSE
165	145	A591	Character routine: the dragon comes for Bilbo
165	187	A5BB	Character routine: the dragon speaks
165	213	A5D5	Character routine: the dragon wakes
166	0	A600	Unused routine
166	20	A614	Handler for the magic door
166	49	A631	Handler for Thorin: the small curious key shatters
166	85	A655	Handler for the window: OPEN and CLOSE
166	120	A678	Handler for the window
166	158	A69E	Timer 4: sinking into the bog
166	184	A6B8	Handler for the curious map: Elrond reads it
167	8	A708	Handler for the rope: THROW ACROSS (the river)
167	98	A762	Evens
167	106	A76A	Handler for the rope: PULL
167	146	A792	Handler for the boat: it crosses by itself
167	159	A79F	Character routine: Bard remembers his orders
167	198	A7C6	Character routine: Gollum asks his riddle
167	234	A7EA	Character routine: Gollum waits for the answer
168	26	A81A	Character routine: Gollum mutters
168	66	A842	Character routine: a character eats Bilbo
168	101	A865	Character routine: dawn in the trolls' clearing
168	177	A8B1	Character routine: the trolls talk
168	202	A8CA	Has the game been won?
168	217	A8D9	Character routine: Elrond gives Bilbo lunch
169	27	A91B	Handler for the barrel: JUMP ONTO / CLIMB INTO
169	80	A950	Timer 1 expires: the web is mended
169	104	A968	Timer 9 expires: the side door vanishes
169	133	A985	Timer 9 tick: the side door appears
169	150	A996	Handler for the side door: closing it
169	167	A9A7	Timer 5 tick: the magic door opens and an elf sweeps past
169	187	A9BB	Print a message if Bilbo is near the magic door
169	201	A9C9	Timer 5 expires: the magic door closes
169	212	A9D4	Timer 6 expires: the ring comes off
169	237	A9ED	Handler for the wine: Bilbo gets drunk
169	255	A9FF	Timer routine
170	4	AA04	Timer 2 expires: smothered by the spiders
170	19	AA13	Pale bulbous eyes: tick routine
170	46	AA2E	Pale bulbous eyes: expire routine
170	71	AA47	Action table
172	31	AC1F	Articles
172	49	AC31	Abbreviated words
172	113	AC71	Messages and scripts
181	203	B5CB	Game variables
182	15	B60F	Verb endings
182	40	B628	Orders buffer and command frames
184	208	B8D0	Room pointer table
185	112	B970	Room prepositions
185	122	B97A	Room records
191	83	BF53	Object index
192	11	C00B	Object records
198	31	C61F	Default action handlers
198	125	C67D	Room-entry handlers
198	147	C693	Room-entry handler: Beorn's house (room 22) wakes the butler
198	161	C6A1	Room-entry handler: the place of black spiders (room 26) starts timer 2
198	168	C6A8	Room-entry handler: the deep bog (room 29) starts timer 4
198	175	C6AF	Room-entry handler: the Elvenking's cellar (room 32) wakes the dragon and Bard
198	204	C6CC	Room-entry handler: the forest (rooms 2 and 3)
198	217	C6D9	Room-entry handler: the forest river (room 33) - only in a barrel
198	235	C6EB	Gollum's riddles
198	253	C6FD	Hidden routes
199	28	C71C	Character behaviour programs and reaction tables
201	115	C973	Turn timers
201	186	C9BA	Character table
202	50	CA32	Unused
204	0	CC00	Location picture index
204	67	CC43	Picture: room 1 (?)
206	119	CE77	Picture: room 49 (?)
207	178	CFB2	Picture: room 6 (?)
210	78	D24E	Picture: room 11 (?)
211	103	D367	Picture: room 37 (?)
213	181	D5B5	Picture: room 43 (?)
215	19	D713	Picture: room 38 (?)
217	42	D92A	Picture: room 7 (?)
219	168	DBA8	Picture: room 24 (?)
221	121	DD79	Picture: room 35 (?)
224	44	E02C	Picture: room 13 (?)
224	73	E049	Picture: room 31 (?)
225	66	E142	Picture: room 5 (?)
225	159	E19F	Picture: room 28 (?)
227	254	E3FE	Picture: room 4 (?)
228	122	E47A	Picture: room 32 (?)
230	228	E6E4	Picture: room 16 (?)
233	238	E9EE	Picture: room 25 (?)
236	62	EC3E	Picture: room 8 (?)
238	67	EE43	Picture: room 41 (?)
240	1	F001	Picture: room 26 (?)
241	230	F1E6	Picture: room 39 (?)
243	91	F35B	Unused